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  4. The number of p-electrons in bromine atom is:

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Q. The number of p-electrons in bromine atom is:

BVP MedicalBVP Medical 2005

Solution:

Br (At. no =35) E.C $ =1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{10}},4{{s}^{2}}4{{p}^{5}} $ $ \therefore $ Br atom has 17 p-electrons.